California Energy Commission Appliance Efficiency Regulations

CA Energy Comm. (CEC)


US - State of California only
Type: Mandatory Efficiency Standard
Links: CEC Appliance Efficiency Regulations Home Page
  2016 Appliance Efficiency Regulations (Title 20)
  2016 Appliance Efficiency Rulemaking page
  2016 Building Efficiency Standards (Title 24)
  2019 Building Efficiency Standards (Title 24)
  CEC Home Page


Battery Charger Systems - Large

Large battery charger systems manufactured on or after January 1, 2014, shall meet the performance limits in the following table:

Performance ParameterStandard
Charge Return Factor (CRF) 100 percent, 80 percent Depth of discharge CRF ≤ 1.10
40 percent Depth of discharge CRF ≤ 1.15
Power Conversion Efficiency ≥ 89 percent
Power Factor ≥ 0.90
Maintenance Mode Power(Eb = battery capacity of tested battery ≤ 10 + 0.0012Eb
No Battery Mode Power ≤ 10 W
Battery Charger Systems - Small

Effective February 1, 2013, for consumer products that are not USB charger systems with a battery capacity of 20 watt-hours or more. Effective February 1, 2014, for consumer products that are USB charger systems. Effective January 1, 2017, for non-consumer products.

Performance ParameterStandard

Maximum 24 hour charge and maintenance energy (Wh)

(Eb = capacity of all batteries in ports and N = number of charger ports

For Eb of 25 Wh or less: 16 x N
For Eb > 2.5 Wh and ≤ 100 Wh: 12 x N=1.6Eb
For Eb > 100 Wh and ≤ 1000 Wh: 22 x N=1.5Eb
For Eb > 1000 Wh: 36.4 x N=1.486Eb

Maintenance Mode Power and No Battery Mode Power (W)
(Eb = capacity of all batteries in ports and N = number of charger ports

The sum of the maintenance mode power and no battery mode power must be less or equal to: 1x N+0.0021xEb
Compact Audio and Video Equipment
Appliance TypeEffective DateMaximum Power Usage (W)
Compact Audio Products January 1, 2007 2 W in Audio standby-passive mode for those without a permanently illuminated clock display
4 W in Audio standby-passive mode for those with a permanently illuminated clock display
Digital Versatile Disc Players and Digital Versatile Disc Recorders January 1, 2006 3 W in Video standby-passive mode
Computers, Computer Monitors, and Signage Displays Minimum energy efficiency requirements for computers, workstations, monitors, and signage displays can be found here.
External Power Supplies

Effective February 2016, EPSs must comply with the U.S. DOE EISA 2007 Level VI requirements. Information on the U.S. federal minimum efficiency levels for EPSs can be found here.

Nameplate Output (W)Minimum Efficiency in Active Mode*
< 1 Watt 0.5 * Nameplate Output
≥ 1 and ≤ 51 Watts 0.09 * Ln(Nameplate Output) + 0.5
> 51 Watts 0.85
 Maximum No-Load Energy Consumption
Any Output 0.5 Watts
*Ln (Nameplate output) = Natural Logarithm of the nameplate output expressed in Watts
General Service LED Lamps and Small Diameter Directional Lamps - CEC LED Appliance Efficiency Rulemaking page
LED Lighting Quality Specification - Voluntary - Voluntary requirements to qualify for state's utility rebate program for consumers. Version 3 can be downloaded here.


January 1, 2013 A ≤ 1400 1 W P ≤ 0.12 × A + 25 0.9
Source: California Energy Commission

In addition, TVs manufactured and sold in California on or after the Tier 1 date must meet the following CEC requirements:

  • Automatically enter a standby (passive or active) mode after a maximum of 15 minutes without video and/or audio input on the selected input mode
  • Enter a standby-passive mode when turned off by remote or integrated button or switch
  • Have a peak luminance in "home" mode, or in the default mode as shipped, of ≥ 65% of the peak luminance of the "retail" mode, or the brightest selectable preset mode